CVE-2026-28405: falha de alta gravidade em MarkUsProject Markus
MarkUs: Stored XSS in Submission HTML Preview Enables Instructor-Context Actions
Publicada em · Atualizada em
Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 8epss 0.3%
MarkUs is a web application for the submission and grading of student assignments. Prior to version 2.9.1, the courses/<:course_id>/assignments/<:assignment_id>/submissions/html_content route reads the contents of a student-submitted file and renders them without sanitization. This issue has been patched in version 2.9.1.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Produtos afetados
MarkUsProject · MarkusCVEs relacionadas — MarkUsProject Markus
No mesmo produto, das mais perigosas para as menos.
CVE-2024-47820MEDIUMMarkUs vulnerable to Path TraversalEPSS 0.7%CVE-2024-51743HIGHArbitrary File Write leading up to remote code execution (instructor accounts)EPSS 0.7%CVE-2024-51499HIGHMarkUs Arbitrary File Write leading up to remote code execution (student accounts)EPSS 0.7%CVE-2026-25057CRITICALZip Slip in MarkUs config upload allowing RCEEPSS 0.5%CVE-2026-27807MEDIUMMarkUs: YAML alias (‘billion laughs’) DoS in config uploadEPSS 0.3%CVE-2026-24900MEDIUMMarkUs has a submission-view IDOR exposes all student submissionsEPSS 0.3%